Amalgamator



Jan 6, 1931. c. 5. WHITE AMALGAMATOR Filed Sept. 26, 1928 3 Sheets-Sheet 1 f/vvE/vToR CHARLEs 5. WH/TE Jan 6, 1931.

c. 5. WHITE 1,787,923

AHALGAHATOR Filed Sept. 26. 1928 s Sheets-Sheet 2 ZvvE/vroR. CHARLES S. h/H/TE /1' 7- To mvE Y5.

Jan 6,1931. c. SwHnE 1,787,923

AMALGAMA'IOR Filed Sept. 26. 1928 3 Sheets-Sheet 3 54 Y Jo j/VVENT R. CHARLfS 5. WHITE.

Patented Jan. 6,1931

N-IransrA res IPA ENT QFHCE .Bo'rrror' oomr'rom CALIFORNIA CHARLES Serums WHITE. or LONG. BEACH, CALIFORNIA, ASSIGNOR OF FIETEEN .PER CENT .To JAMES .E. OGDEN AND FIr'rEnNr R CENT .AMALGAMATGR Application fild september 26, 1928. SeriaI No. 3083464 2 llhis invention rrelates more specifically to anani'algamating:apparatus for the recovery of fine :gold from sands and ores.

lhe primaryobject of the inventioniis to Briefl-y stated the invention residesrina semicircular trough 'or table 'member horizontally disposed and slightly inclined from thesit'eecl to 'the'discharge end and is adapted to be continuously"oscillated, such action causingthe values tobe liberated from'the :s'an ds which are then discharged through a plurality of openings in the bottom i-of' the 'trougli'into a similar trough located directly below and connected therewith, the second trough being provided with a plurality :of amalgam pockets which recover the values I from thesands'orother'materials being operated upon. The invention-also resides further 111' such other' novel. features of "construc- 'tionasmay be herein disclosed. 25

In the accompanying drawings wherein certain embodimentsof the inventionare disclosed by way o'f illustration;

Fig. '1, 'is a top plan View of the amalgamating machine. J

"Fig.2, is a verticals'ectional view taken on line 22 of Fig.1. Y

Fig. 3,is a front elevation takenin the direction indicated by the arrow 3 of Figs. 1 and 2. i

Fig. 4:, is a rear elevation'taken int-he direction indicated by the arrow 4- of Figspl andfQ. 1

Fig. 5, is an enlarged fragmentary plan view.

Fig. 6, is a section taken on line 6-6 of Fig. 5.

Fig. Fig. 6..

7, is a section taken on line 77 of Fig. 8, 1s a fragmentary plan View of the second trough.

Referring by numerals'to the drawings, 10

designates the upper trough which is semicircular in cross section and of considerable length relative to its width, and is pivotally mounted adjacent its forward and rear ends by pins .11 which extend -through. openings '12 in bearing blocks -13, which in :turn tare carried by ,pins '14 set at right angles to-tlfe pins 11, the pins 14 extending through openings in the bearingblocks andiin the iiyoles 1 8 which are secured to cross bars 19-and 120 of frames generally designated at 1 22 and-.23 respeetively. The pins'll are carried :by standards 24.. which are secured to I cross bars :26

extending :across the 'top and secured-to the sides of'the trough. :By "rneansio'f'the-above described construction the trough may 'be oscillated onthe a'Xis of the -,pins'11.

The cross bar 19 of the frame 22 is rigidly supported by 1 standards 328 whereas the cross bar of the frame 23 :is harried-by uprights 30 of a' structure 31 having vertieally :dis-

posed bars 32 'slidable in rigidly mounted channels 34:.

By the arrangement of the' pins 14 the inclination ofthetroughlmmay be varied by raising: or loweringcth'e *re'ar end 35 of the trough by screws 36; having heads 37' rotatable :iIl sockets 38 secured 'tovthe horizontal into the. forward "end of the-trough. '10 byztany suitable feedingmpparatus not'shown. The I sands are delivered tothe-machine'avet,ihowever additional water may be supplied through pipe 44. The sands are discharged from the trough 10 through a pluralityi of evenly spaced openings 46 into a second trough 50 wherein the 'values are recovered by contact withthe mercury. r The trough'50 is :positioned' directly below the trough .10

andis secured thereto by brackets or hangers'52. "1 Y Due to "the inclination *and oscillation of thetrough 10 the sandsior other material eontinuously move toward'its lower endyth'eiac I tion' of which is somewhat retarded 'bya plurality of screens 53 of approximately one f fourth inch iinesh plac'ed' "on the "bottom of the trough: :10 adapted tocollect the coarser metallic 'valuesiinthe r'sa-nds between the meshes of the screen, the sands being directed toward the openings 46 by converging bafiie plates 54. The discharge area of the openings 46 may be quickly regulated by closures 56 slidably mounted in guides 57 secured to the bottom of the trough as clearly shown in Figs. 6 and 7 The discharge area of the. openings regulated by the closures 56 so thatian approximately equal amount of sand is discharged 'through each opening, also providing sufiiclent total area to permit d1scharge of all the sands from the trough 10 into the trough 50. In order to prevent any sand running past the lastdischarge opening 46 a vertically disposed plate 58 is provided, all of the openings being maintained opened and free from clogging by a plurality of blades 60 secured to a shaft 61 mounted in bearing 62, the lower end of each blade extending into the openings and agitating the materials passing through the openings.

These blades are held in a vertical position by'a pair of opposed coil springs 63 one end of each of which is secured to the upper end of a lever 64 keyed to the shaft 61, the other ends of the springs being connected to brackets 65 on the cross bar 20 of the structures 31.

- It will be seen that as the trough is oscilla e'd'the openings 46 will be kept free by the blades remaining stationary due to the action of the springs 63. u I

The trough or table members arev oscillated by a pitman 66 one end of which isconnected by a pin 67 to a crank 68 ona shaft 69, the other end of the pit-man being connected to the lower end of a lever 70, the upper end of which is secured to the bottom of the trough 10. I The tilting range of the trough may-be varied by changing the stroke of the pitman which is accomplishedby moving the crank pin 67 into any one of the openings 68 on the crank. If it becomes nec essary to tiltthe trough in a greater range than the Width of the openings 46 the blades 60 willyield due to the mounting of the springs 63, thus preventing a'breaking or dis lodgment of the same. The shaft 69 is mounted in bearings 72 and may be rotated through a suitable speed reducing unit generally designated at 73. 7

1 formed in the bottom ofthe trough 50 the r so " gamma tion.

I As previously referred tothe values are extracted in the lower trough 50 by contact with mercury. A plurality of pockets 7 5 are sidesof which are flared as indicated at 76 and terminatein short tubes 77, the pockets being partially filled with mercury and closed by screw caps 78,.by means of which the amal? y be quickly removed after an Operaaction of which causes the mercury in the second trough to be thrown against the sides, thereby bringing it into contact with the sand resulting in a high extraction of values therein. The movement of'the sands toward the lower end of the trough 50 is retarded by accurate baffle plates 79 and are finally discharged through t-he spout V80. Irclaim 1. An amalgamating apparatus comprising a'semi-circular trough, means for pivotally supporting said trough for lateral oscillation on centers located directly above said trough, a second semi-circular trough troughs.

2. An amalgamating apparatus comprising an elongated inclined semi-circular trough having a plurality of openings in its bottom,a second semi-circular trough directly below and rigidly connected to said "first trough, pivot pins projecting from standards secured to said first trough adjacent each end thereof, said pivot pins extending into openings in-supporting members positioned above vthe radial center of said first trough, a plurality of screens resting on the bottom of said first trough between the openings therein adapted to collect the coarser metallic values in the sand passing thereover between themeshes of the screen, said second trough having a plurality of pockets having flared sides adapted to hold a quantity of mercury, and means for oscillating said first and second troughs laterally on said pivotal pins, whereby the mercury in the pockets of said second trough will be sloshed against the sides thereof to recover the values in the sands discharged through the openings insaid first trough into said second trough. 1

In testimony whereof I aflix my signature.

' CHAS. S. WHITE.

' .Due to the pivotal mounting of thetrough i at each end above the. center thereof, a swinging or oscillating movement is effected the 

